Sa-m-tjel seabuky



s. SEABURY, GAS CHECK FOR 'BREEGH LOADING ORDNANG'E.

Patented Deo. 6, 1892.

iseen-Loan` gordnaneaof which the foivlowingis;a pecitication.'

Application had August 3,1892. f

o. @uw w1 may concern: t Be itknovvnfthat LSAMUEL SEABURY, lientenat in the'lnited StatesNavy, atpre'sentf` ysidin', ;;at@Bayonne7 in the county ot' Hudson ntl-StateofhgeivvJersey, have invented a new?"y andvus'eful'.- provement in Gas-Cheeks for- ;lhistinven'tionisapplicable to th'atclass of teelten-@loading-fordnanee in which vthe remov-j ,ablebree'cngbloclft is inserted intoand With-` f Adavinrlfrot he'fgu-njby movements in lin'e, ,with the bore ort-parallel with lthe axis thereof; f *"andgis alsolapplicable to that class in which :T55 thebreech 'isj opened and closed by a move-fent ofpttheThreeoch-'block transverseto thev fefthe improvementisto obtainf Vagasheckvvhichshallnotonlyfbe simple lin'j, construction;y andfefticient in action, but hall/loe,v alsoffentirely. freeffroin liability: tol

eeessary movements- 'of resents an axial section of they -ofabannon havinga muti--I aded breech-block which is vd-Withdra-Wn from the breech v `parallel:with "the, boreril'liis4 he Yptilication Of'myinvention 10aassf; Fig'. 2frepresents a sim i531 argoe'r scalegfof'some of theu vFig'. nfl'. Fig. .3 isfa'gvievv,corref 'Fig-.12, illustrating a modifica# nv'ention as applied f1.0 the vsame Fig. r4 representsian'axial sec* vontali'direction oth-thejbreech zinnen-.havinga transversely]l liding breecl1block. Y. ,fSin'iilar letters of reference designate correlspondingi parts in -all thejiigures o willflrs't eso'ribey my inventionwith ref.

" 'andf2--- hebod yet-the cannon, bored nd to thereby'impair the free,`

-thanthat of the faceof' the breech-blockgandl .consequently larger Vthan that of the-bore` fand b e're'ceived between the' marginal fpor-i 1tion of the face ofl the breech-block andi' thel 1 face s of thefront partof the s crew-threadedff f space t is provided in the'breech-blockfsea `tion which is received Abetweenithe face of 'l the ybreec'hfblock and the face softh'e breech! c 'block seat, which portion has an',annularrear-1` .ward bulge yto form anannulargroove initsy i* face-forthe reception of the packing-ringer" annular gasket n, a correspndinggroovef be?"l the said ringer-gasket.

yt 'on SABURY,A onl THE UNITED STATES NAVY. p.f-esfCi-IECK. FonYBREEC||LjoAD|Nev orten-ANGES..

PEcIFIcAcrIoN forming pais gf Letters 'Pai-.ent 487,380, dated December e, 1892; 1

serial No.44ao54. (Np model.)

" the gun to provide for the receptioiiof-"lny -`improved gas-check.

c C .Tfn designate the gas-check, which in this example of my invention is composed of g' va circular .disk C of metal, preferably Ofsted s, f t and elastic', a flanged steel collar J, fittedto a central opening in saidv disk, and a packing- .rn'g or gasket n, the said collar and diskbe;

ing attached to the breeoh-block bya bolt D,

passing centrally through the said blockand through the said col1ar`. The angeg around j y vthevfrontof the said collar J, lies and1bearsfj^j 65a,

in'gthrough the back of the disk Cv vispfitte'd J to a 'counterbore r', providedfin t-he face'fofthe'f f l breech-block vin front 1 of the central `bore', i j which is provided through thesaidy block for-70j against, the front of the diskOfand the part of the collar behind the said flange projects the bolt D. The boltDhas ashoulder which abuts'jagainst thebacklof the connterbore r' and is held rigid'1y`inplace by meansfofa nut i dftted mi@ SCleW-thread prov'id'ed'on itsj rear fpart. The "saidjbolt is represented as hav-i; ing acentral'bore to'constitute the vent/for r.. Vfiring and its rear end counterbored', as shown if 'at e, toireceive a priiner.

. The, disk lo is of a circumference noti-fiese of 'the chamber 'off/the gun',inorderthat its marginal portionv may overlap the "boref breech-block seat surrounding the bore.,

around the forward portionofl vthebreech block-and the` 'outerl circumferenceu'of th disk C. The said disk C is-represent-edia substantially flat,` except in the'xnarginal porf ing formed inthefface s for. the: reception: 0

Y o ,The ilargin'al"p f of 'the fatte" Qfjggllh@ bl'eechfblock "isf "PATENT j il f. of "thek gun and opp'ositether dicated at c in Figs. land .-2, to

id disk 4when it is lsubjectedfto reduced upon its face bythe lfglin.

l s ticfor' plastic material; butfI n a'keit of a composition of asbes- .Sejd in? seme of; the gas-checks.` for breechlloa'dingordnance., The said ring, which may be jo'f' round'ersquare transversesection, Amay be,attachefdl'tothe face of the disk or placed i-nf-thegro vein the facels ofthe breech- 1' When the breech-.block is screwed Y l'port-ion of the diskwill libe p'ed vbetween the breech-block n vannu'lar-f1ever, the fulcrum a; ofA which is vthecircularjedgeformed around the cavity C1iti-thejbreech-block,'and by this lever-like vaction -thee'marginal portion of the disk outside o t the-said edge will -be pressed forward f fandcaused to compress the gasket or packwingqingfsotightly between the breech-block 35'" preclude-the possibility of any leakage of gas. ""fAfter the :discharge o f the gun the elasticity ""51; collar' `J'tofthe normal condition. (Shown in '."Figsyl a'n'df.)v

tween chefflanged collar J and the bolt D,ja groove vrijslfsojturned in the face of the vsaid p Q11,a1-fasste':form a very thin and iexible anlnularjjlipgy Figs. 2-and 3, around the said olt.fAfn`y t,asf-getting between .the headoff heboltllanjdjthe said -angeentering the said cia-.iii'sh-..` A f Th exampleof my invention illustratedin iff "s'gufromjthat- Shown in Figsl and e. metal disk O is represented y ayto its circumference, but l spectslike the first example.

d-the faces ofthe seat. The

p r duced bytheA pressure ,of gases,

lio-

at rf o 1o of--fthe-diskC is slightly dishedfor ackward bulging ofthe said pork-'- .gasket 'n may be ,made of any' ase,"sucl1 as 'is nowvv commonly ding,y the said ringor gasket and secure by Letters Patent, isv yconcave,.a`nd a gas-check disk, the margi"nalandthe Vface s of' the breech-block seat ,as-to of the disk produces the return of the flanged `In ord'erto prevent any leakage of gas loe-` described',` with a"breechloading gun and -al Y ducfe's such contraction-of the edge- 'f jthegs'aid 'p fiaron'ndthe bolt as kto -forlnal o'. packing-ring. or gasket. I n" Iportion is, as in thejtnfst-exam,` 'pbetween the :face of the;

feszso j portion of the, disk C is cupped to receive l Withini t,thecollar J and the headof the bolty D, and the .said block is counterbored from. 7o

its yfalce aroundthe bore provided for the vSaid.-

bolt to receive'the said cup, so that the-said bolt-head and colla'rare so countersunk within thebreech-block as not to interfere v vith`-' 'y its sliding movement. -In' this example the 7'5*y packingring or gasket fn. is. ,square -in its 'transversesection and is received and fre'- tained wit-hin a groove of corresponding form in the front of the breech-blockseat, and the vmarginal portion'of the diskis flat; butthe 8o ysame.leverllike action described with reference to Figs. l and 2 occurs'rwhen the pressureol the gases acts upon the disk and. the marginal port-ion of the disk is madetocoml pressthegasket 'orpacking-ring wand to85v make a tight joint between the breech-block and the bore. `In adapting my inventionv tothe sliding breech-block the packing-ring orgasket may sometimes be dispensed Withi.

and the margin o f the disk may operatev in` -9o' direct Contact -With the face sor front of the breechzblock seat, as it doesin the. example v '-v Fili.

VhatI'claim as my invention, and desire to The combination,substantially as herein v described, of a breech-loadinggun, a breech# block therefor' having a portion of' its, face marginal portion of; the face of the'breech` block andfth'e other portion of which disk i nearer to its center is free to move backward 4:o5 within the concave of the breech-block facel for the purposeof exerting a forward pressure oli-its marginal portion, as herein set forth.

2'. The combination;substantially as herein IIO breech-block therefor having a portion of` its face concave, of a disk C and a flangedcollar- J, fittedto a central opening in said disk,-'a`n dl a central bolt for attaching said disk andcol- I i lar to the breech-block, the saidv dis'k b.eing'r15 adaptedA to overlap the bore ofthe gun f and to be lfeceivedbetween the face ot' thefbreejch-A block and the front face of the breech-block4 f seat and the collar and the central porti'onoffhgy f said disk bei-ng 'free toy move backward l onfrzo` ysaid lb0lt,f orthe purposeherein setforth. 3. The combination, with the breech-block', f of a.-gas-check disk, a centralbolt `for atta.ch.v ing saiddisk'tothe facezof.thefbreechlblock, *a and a collar iitted to saidboltto bearagainstjt z' 5 y the-flQntfOfthe diskand constructedW-ithxa v, flexible lip a to prevent ,theescape 'of gas4 boltrsubstantially as hereingset" 

